2a single mounting facility thread class 0.437" single mounting facility thread length 1.899" overall length tap, circular, bushing mount unef single mounting facility thread series
2b single mounting facility thread class 4.312" overall length 3.000" overall width 24 single mounting facility thread quantity per inch tap, circuit selector unc single mounting facility thread series
2a single mounting facility thread class 0.469" single mounting facility thread length 4.094" overall length 32 single mounting facility thread quantity per inch tap, circular, bushing mount uns single mounting facility thread series
2b single pressure connection thread class 0.438" single connection inside diameter 5.188" overall length 2.812" overall width rectangular unf single pressure connection thread series
2b single pressure connection thread class 0.438" single connection inside diameter 5.188" overall length 2.812" overall width 0.250 in. dia vent hole in switch body rectangular unf single pressure connection thread series